Improvement in head-lamps for vessels



No. 38,764 PATENTED JUNE 2, 1863.

11. SANGSTER. HEAD LAMP FOR 'vBssBLsi each.

additional reflectin g-surface' for the light.

. UNITED i STATES PATENT i-OFmcE.

1-1 new SANGSTER, or BUFFALO, nnw Y RK,

IMPROVEMENT IN HEAD-LAMPS FOR vEss ELs. I

Specification forming part of Letters Patent No. 38.764, dated J une 2,1863. I v

To all whom t may com-era.-

Be it known-that 1, HUGE Snucsrnn, of Buffalo, in Erie county and Stateof New York, have invented certain new and useful Improvements inHead-Lamps for Vessels or' Canal-Boats; and I declare the followingdescription of my; method of constructing the same to be sufficientlyclear and exact to enuble Others skilledin the art to make and use myinvention, and forthat purpose reference is hadto the accompanyingdrawings and the letters of reference marked thereon.-

. The same letters in Figures 1', 2,3,4, 5,6, and 7 in said drawingsrepresent similar parts in The nature of my invention consists-'--First. In a movable oil-pot so a'rrangedor constructed that by means ofa knob or thumbpiece placed outside of thelamp-case the oilpot may bemoved to or from the reflector and properly adjusted to the-focus of thesame .without the necessity of opening the door of {thelamp case orcovering, and in so con-, *structing and attaching the reflector to thelampthat it may be moved vertically, up or down, or caused to swing upona center at its back by means of two knobs or thumb-pieces, which are;Placed outside of the lamp-case, thus giving complete control of thelight without the necessity of opening the door of the lamp. It enablesthe boatm-an'to adjust his" 7 light exactly to the focus ofthereflector,- or to cast the rays of light up or down.

. Second. In an additional ventilation to the top of the lamp,consisting of four tubes covered with cones, for the purpose of allowinga larger and clearer passage 'for the hot air generated within thelamp-case; also, interposing between the looking-glass and the sur--face of the wings of the lamp a non-metallic substance, such as a thinsheet of board,{ which is inclosed in a frame with the glass,) for-thepurpose ofv preventing the'amalgamation of the tin on the wings of thelamp and the quicksilver on the looking-glass, and thuspreventingthedestruction of the silver on the glass which is attached tothe wings'to give an Fig.2 in said drawings represents a front View ofthe lamp complete, showing the burner,

chimney, oil-pot, ventilation-tubes, and the wings. A and A are thewings, B the reflector,

ment'to the reflector. I its place by a double flange in a similarmanner to knob-H. Iis a knob and screw, also held to its place by-adonbleiiange. It screws G the chimney,lD,the bur uer,'E the oil-pot,and)? the recess along which the lamp-pot slides. A is the lookingglass,which is fast enedin a frame, as shown at Fig; 6, audi attached to thelamp-wing by slipping up one.

end "into or behind the slip or groove marked 8. The end of the glassframe under the slip Sis shown-by the dotted lines, and marked T. 4 Thelower end is fastened by a thin strip of 7 met.

al, which passes down into agroove, marked Q.

This piece or fastening is marked R,and pro-- jects a little over thelower part of ,the frameand holds it to its place, as shown'in the wingA. F. and F are the additional ventilationtube's. The dotted lines showabout the height" required forthe tubes inside of the'case. R representsthe bail or hand-1e by which the lamp is carried. 4

ing the -oil-pot,refl'eetor, &c., also'the arrangewent outside of thelamp by which the oil'- pot and reflector are moved. N- and thear rowsrepresent a case or box, within which the arrangement for moving the,reflector and throwing the light up or down ismade to" Swing atthe pointL. K-is a piece of metal, which swings at the point L, and towhich thereflector is 'easily' attachcd or detached. This piece of metal isfastened to thec'ase' N, by a wire, which passes through its center andI through the sides of the case N. This wire or 'bolt is shown moreclearly in Fig. 4 and Fig. 5, and is marked M. J represents a screw,

which is bent, forming part of a circle, and is firmly attached to thepiece K. H is a knob, which, is made hollow, through which the screw Jis made to work; 7 This knob is hold fast to the case N by two-flanges,one on the outside of the case and one on the inside.

They are marked J and J 'Byi turning this knob H to the right or left itworks upon. the

screw J and moves the piece K and the re- 4. flcctor upon the center orjoint L, thus giving the movement to the reflector, which throws thelight up or down. The case-N works in a slide up-and down the back ofthe lamp, and is moved by the-knob and screw G, which knob, on beingturned, givesthe'vcrticalmovef, This knob-G is'held t0 Fig 1 is a sideelevation of the lamp, show'-.

nto a piece which" is attached to the lamp-pot, ind is marked 1 Byturning thisknob the lamppot is made to move to or from. thereflector,-'in and alongthe recess F. F represents the feet upon whichthe lamp stands.

Fig. 3 represents a front view of the lamp,

showing the way in which the grooves are made which hold the glass. Uand U representtwo wires, which hold the wings when shut or closed.These wires also hold them when open; but, as theya' rein common use oncanal-boat lamps, they need not be described here. W-and W representthegroove for the glass. It is buta continuation of the top.

of the lamp, which is bent down and formed into the shape of a grooveinto which the glass is slid.. The'bottoin groove, is madein as imi- 1lar manner, being a) part of the bottom of the marked X and X Fig. 7represents aseetion through the lumpdoor, and shows the manner in whichthe front glass is held to its'pla'ce. The glass is made to s'lip'upwardin the slide or grooves in the door-posts, and is kept up by apiece, Y,which slips into a groove under the lower end lampbent into the from ofa groove, and isof the glass, as clearly shown by thedraw ings.

in Fig. 2, A is the recess, into which the purpose of adjusting it tothe focus of the reflector.

'3. The manner described of attaching the looking-glass and frame tofthewings of the lamp," also the panel or recess which is stamped into thewin; forits reception.

4.'Thecone-covered liOt air tubes, as described, and the grooves i'ortheglass, bent and formed of the same pieces of metal as the top andbottom, as shown in Fig. 3, and lettered W VW X X, also the manner ofholding the'front glass in the door to its place, as shown in Fig. 7,and by thepieceY i HUGH. SANGSTER. \Vituesscs:

JAMES SANGSTER,

DANIEL M. ZooK.

